Career
Marinos signed for Australian rugby league club the Sydney Bulldogs in 1996, playing in one match. In 1997 he represented South Africa at the Super League World Nines. A centre, Marinos played for the Stormers, Newport Reconstruction Finance Corporation and the Newport Gwent Dragons.
He also represented Wales.
He later worked as the Chief Executive Officer of Rodney Parade, before returning to South Africa in 2005. He is the Chief Executive Officer of SANZAAR, a rugby committee in charge of expanding and maintaining the game of rugby union in South Africa, New Zealand, Australia and Argentina.